Dit names applied to the whole family. Its use stopped early in the twentieth century,although a few kept them longer. My great-grandmother who died in 1966 still referred to her dit name: Montpetit dit Potvin. Dont let anyone tell you that they HAD to take dit names. They didnt. Sometimes they took the extra names themselves, sometimes it was given to them by others - to describe their physical appearance, their origin, ortheir personality, etc.